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/*
* Copyright (C) 2013 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.android.printspooler;
import android.app.Notification;
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.os.AsyncTask;
import android.os.Build;
import android.os.PowerManager;
import android.os.PowerManager.WakeLock;
import android.os.RemoteException;
import android.os.ServiceManager;
import android.os.UserHandle;
import android.print.IPrintManager;
import android.print.PrintJobInfo;
import android.print.PrintManager;
import android.util.Log;
/**
* This class is responsible for updating the print notifications
* based on print job state transitions.
*/
public class NotificationController {
public static final boolean DEBUG = true && Build.IS_DEBUGGABLE;
public static final String LOG_TAG = "NotificationController";
private static final String INTENT_ACTION_CANCEL_PRINTJOB = "INTENT_ACTION_CANCEL_PRINTJOB";
private static final String INTENT_ACTION_RESTART_PRINTJOB = "INTENT_ACTION_RESTART_PRINTJOB";
private static final String INTENT_EXTRA_PRINTJOB_ID = "INTENT_EXTRA_PRINTJOB_ID";
private static final String INTENT_EXTRA_PRINTJOB_LABEL = "INTENT_EXTRA_PRINTJOB_LABEL";
private static final String INTENT_EXTRA_PRINTER_NAME = "INTENT_EXTRA_PRINTER_NAME";
private final Context mContext;
private final NotificationManager mNotificationManager;
public NotificationController(Context context) {
mContext = context;
mNotificationManager = (NotificationManager)
mContext.getSystemService(Context.NOTIFICATION_SERVICE);
}
public void onPrintJobStateChanged(PrintJobInfo printJob) {
if (DEBUG) {
Log.i(LOG_TAG, "onPrintJobStateChanged() printJobId: " + printJob.getId()
+ " state:" + PrintJobInfo.stateToString(printJob.getState()));
}
switch (printJob.getState()) {
case PrintJobInfo.STATE_QUEUED: {
createPrintingNotificaiton(printJob);
} break;
case PrintJobInfo.STATE_FAILED: {
createFailedNotificaiton(printJob);
} break;
case PrintJobInfo.STATE_COMPLETED:
case PrintJobInfo.STATE_CANCELED: {
removeNotification(printJob.getId());
} break;
}
}
private void createPrintingNotificaiton(PrintJobInfo printJob) {
Notification.Builder builder = new Notification.Builder(mContext)
.setSmallIcon(R.drawable.stat_notify_print)
.setContentTitle(mContext.getString(R.string.printing_notification_title_template,
printJob.getLabel()))
.addAction(R.drawable.stat_notify_cancelling, mContext.getString(R.string.cancel),
createCancelIntent(printJob))
.setContentText(printJob.getPrinterName())
.setWhen(System.currentTimeMillis())
.setOngoing(true)
.setShowWhen(true);
mNotificationManager.notify(printJob.getId(), builder.build());
}
private void createFailedNotificaiton(PrintJobInfo printJob) {
Notification.Builder builder = new Notification.Builder(mContext)
.setSmallIcon(R.drawable.stat_notify_error)
.setContentTitle(mContext.getString(R.string.failed_notification_title_template,
printJob.getLabel()))
.addAction(R.drawable.stat_notify_cancelling, mContext.getString(R.string.cancel),
createCancelIntent(printJob))
// TODO: Use appropriate icon when assets are ready
.addAction(android.R.drawable.ic_secure, mContext.getString(R.string.restart),
createRestartIntent(printJob.getId()))
.setContentText(printJob.getFailureReason())
.setWhen(System.currentTimeMillis())
.setOngoing(true)
.setShowWhen(true);
mNotificationManager.notify(printJob.getId(), builder.build());
}
private void removeNotification(int printJobId) {
mNotificationManager.cancel(printJobId);
}
private PendingIntent createCancelIntent(PrintJobInfo printJob) {
Intent intent = new Intent(mContext, NotificationBroadcastReceiver.class);
intent.setAction(INTENT_ACTION_CANCEL_PRINTJOB + "_" + String.valueOf(printJob.getId()));
intent.putExtra(INTENT_EXTRA_PRINTJOB_ID, printJob.getId());
intent.putExtra(INTENT_EXTRA_PRINTJOB_LABEL, printJob.getLabel());
intent.putExtra(INTENT_EXTRA_PRINTER_NAME, printJob.getPrinterName());
return PendingIntent.getBroadcast(mContext, 0, intent, PendingIntent.FLAG_ONE_SHOT);
}
private PendingIntent createRestartIntent(int printJobId) {
Intent intent = new Intent(mContext, NotificationBroadcastReceiver.class);
intent.setAction(INTENT_ACTION_RESTART_PRINTJOB + "_" + String.valueOf(printJobId));
intent.putExtra(INTENT_EXTRA_PRINTJOB_ID, printJobId);
return PendingIntent.getBroadcast(mContext, 0, intent, PendingIntent.FLAG_ONE_SHOT);
}
public static final class NotificationBroadcastReceiver extends BroadcastReceiver {
private static final String LOG_TAG = "NotificationBroadcastReceiver";
@Override
public void onReceive(Context context, Intent intent) {
String action = intent.getAction();
if (action != null && action.startsWith(INTENT_ACTION_CANCEL_PRINTJOB)) {
final int printJobId = intent.getExtras().getInt(INTENT_EXTRA_PRINTJOB_ID);
String printJobLabel = intent.getExtras().getString(INTENT_EXTRA_PRINTJOB_LABEL);
String printerName = intent.getExtras().getString(INTENT_EXTRA_PRINTER_NAME);
handleCancelPrintJob(context, printJobId, printJobLabel, printerName);
} else if (action != null && action.startsWith(INTENT_ACTION_RESTART_PRINTJOB)) {
final int printJobId = intent.getExtras().getInt(INTENT_EXTRA_PRINTJOB_ID);
handleRestartPrintJob(context, printJobId);
}
}
private void handleCancelPrintJob(final Context context, final int printJobId,
final String printJobLabel, final String printerName) {
if (DEBUG) {
Log.i(LOG_TAG, "handleCancelPrintJob() printJobId:" + printJobId);
}
// Put up a notification that we are trying to cancel.
NotificationManager notificationManager = (NotificationManager)
context.getSystemService(Context.NOTIFICATION_SERVICE);
Notification.Builder builder = new Notification.Builder(context)
.setSmallIcon(R.drawable.stat_notify_cancelling)
.setContentTitle(context.getString(
R.string.cancelling_notification_title_template,
printJobLabel))
.setContentText(printerName)
.setWhen(System.currentTimeMillis())
.setOngoing(true)
.setShowWhen(true);
notificationManager.notify(printJobId, builder.build());
// Call into the print manager service off the main thread since
// the print manager service may end up binding to the print spooler
// service which binding is handled on the main thread.
PowerManager powerManager = (PowerManager)
context.getSystemService(Context.POWER_SERVICE);
final WakeLock wakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK,
LOG_TAG);
wakeLock.acquire();
new AsyncTask<Void, Void, Void>() {
@Override
protected Void doInBackground(Void... params) {
// We need to request the cancellation to be done by the print
// manager service since it has to communicate with the managing
// print service to request the cancellation. Also we need the
// system service to be bound to the spooler since canceling a
// print job will trigger persistence of current jobs which is
// done on another thread and until it finishes the spooler has
// to be kept around.
try {
IPrintManager printManager = IPrintManager.Stub.asInterface(
ServiceManager.getService(Context.PRINT_SERVICE));
printManager.cancelPrintJob(printJobId, PrintManager.APP_ID_ANY,
UserHandle.myUserId());
} catch (RemoteException re) {
Log.i(LOG_TAG, "Error requestion print job cancellation", re);
} finally {
wakeLock.release();
}
return null;
}
}.executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR, (Void[]) null);
}
private void handleRestartPrintJob(final Context context, final int printJobId) {
if (DEBUG) {
Log.i(LOG_TAG, "handleRestartPrintJob() printJobId:" + printJobId);
}
// Call into the print manager service off the main thread since
// the print manager service may end up binding to the print spooler
// service which binding is handled on the main thread.
PowerManager powerManager = (PowerManager)
context.getSystemService(Context.POWER_SERVICE);
final WakeLock wakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK,
LOG_TAG);
wakeLock.acquire();
new AsyncTask<Void, Void, Void>() {
@Override
protected Void doInBackground(Void... params) {
// We need to request the restart to be done by the print manager
// service since the latter must be bound to the spooler because
// restarting a print job will trigger persistence of current jobs
// which is done on another thread and until it finishes the spooler has
// to be kept around.
try {
IPrintManager printManager = IPrintManager.Stub.asInterface(
ServiceManager.getService(Context.PRINT_SERVICE));
printManager.restartPrintJob(printJobId, PrintManager.APP_ID_ANY,
UserHandle.myUserId());
} catch (RemoteException re) {
Log.i(LOG_TAG, "Error requestion print job restart", re);
} finally {
wakeLock.release();
}
return null;
}
}.executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR, (Void[]) null);
}
}
}
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